Образуйте вопросительную и отрицательную форму предложений:
1 He was my best friend.
2 I had some notebooks and pencils in my brief-case.
3 She goes to the University every day.
4 We work at the research department.

Was he my best friend?He wasnt my best friend.2,Did I have any notebooks or pencils in my briefcase? I didnt have any notebooks or pencils in my briefcase.3 Does she go to the university every day?She doesnt go to the university every day.Do we work at the research department?We dont work at the research department.